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bezimeni [28]
3 years ago
11

What is a reactant of a chemical reaction?

Chemistry
1 answer:
Alika [10]3 years ago
6 0

The reactant of a chemical reaction is one of the two or more substances in a chemical reaction. This image should help:

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4 physical properties of spoonfull of sugar
almond37 [142]
Small crystals 
<span>white, brown </span>
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3 years ago
Read 2 more answers
. Write the following isotope in nuclide notation (e.g., “ ”): copper-70
vekshin1

Answer:

{\boxed{\text{$_{29}^{70}${Cu}}}

Explanation:

The atomic number (Z) of copper is 29 and this isotope has an atomic mass (A) of 70.

The general symbol for an isotope E is _{Z}^{A}\text{E}.

The atomic number is a left subscript, and the atomic mass is a left superscript.

\rm {\text{The nuclide notation for copper-70 is }}{\boxed{\textbf{$_{29}^{70}${Cu}}}

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3 years ago
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3 years ago
A chemist is using a solution of HNO3 that has a pH of 3. 75. What is [H ] for the solution? Round to the nearest hundredth. × 1
Alexeev081 [22]

The estimation of the acidic and the basic character of a solution is called and defined by the pH. The \rm [H^{+}] concentration of the solution will be \rm 1.77\times 10^{-4}.

<h3>What is the pH?</h3>

pH is a measurement of the free hydrogen and hydroxyl ions in the solution of the substance.

It can be calculated as:

\rm pH  = - \rm log[H^{+}]

Given,

pH = 3.75

Substituting values in the equation:

\begin{aligned}\rm 3.75 &= -\rm log[H^{+}]\\\\\rm [H^{+}] &= 10^{-3.75}\\\\&= 1.7782 \times 10^{-4}\end{aligned}

Therefore,  \rm 1.77\times 10^{-4} is the concentration of the hydrogen ions.

Learn more about pH here:

brainly.com/question/10285267

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2 years ago
What kind of scientist would study the effects of acid rain on marble statues?
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Answer:

A chemist

I hope this helped :D

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